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Calibre-Web vs BookFusion: catalog facts
Calibre-Web	BookFusion
Free Free to use, with source code published on GitHub.	Freemium Free account to get started, with paid plans for more.
Web, Self-hosted	Android, Web, Browser extension
Uses an existing Calibre database directly Read books in the browser or download them	Syncs reading position across devices Reads both EPUB and PDF
Depends on a library created with Calibre Requires running a server	Books are stored in a hosted cloud service Requires an account
Self-hosted	Downloadable app, Web application, Hosted service, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.